Perfect Lemon Meringue Pie: Reloaded Recipe | Alton Brown

Ingredients

• 8 tablespoons (1 stick) unsalted butter
• 1 cup plus 2 tablespoons plus 2 teaspoons all-purpose flour
• 1/2 teaspoon kosher salt
• 1/4 cup ice water
• 2 cups sugar, divided
• 4 large eggs, separated
• 1/4 cup cornstarch
• 1 1/2 cups water
• 1/2 teaspoon kosher salt, divided
• 1/2 cup fresh lemon juice
• 1 packed tablespoon finely grated lemon zest
• 3 tablespoons unsalted butter, cubed, at room temperature
• 1/2 teaspoon cream of tartar